ASU chip burnt

[peermoh80]

Hi ALL,

can any one help me why my ASU chip get burnt during the testing...pls see the picture.


Thanks.

[peermoh80]

Dear ALL,

Iam facing again and again the same problem i wrote above.its a 3rd time my ASU card get burnt for 3 times same chip gets burn.

i would be glad if any one can give the reason for this.

Thanks.

[old_tech]

WOW, 3-ASU is fed by 3-ftcu fed by chas7. Not knowing what role the chip places in the scenario kind of makes it hard to find a cause. It's also connected to the 3-cpu. Ground faults on the system? bad 485 cards can wreak havoc on other cabs without affecting the actual cab they're in.

[junjun]

where is the attached picture?

[peermoh80]

hi junjun,

please find the attached.

[peermoh80]

hi junjun,

it seems you r in busy schedule.

[briac]

I cannot see the photo but the way that any card is burn is by ground fault,
I remeber one time,the transformer get ground and all the instrument card next to it was burn;not only fire system.